Dual tired truck wheel



Dec. 8, 1931. L. D. KAY

DUAL TIREDY TRUCK WHEEL Filed March 24, 1926 Patented Dec. 8, 1931 UNITED STATES PATENT fol-lneE'V LLOYD n. KAY, 0F Los ANGELES, CALIEORNIA, 'AssTGNoR ToKAY-BRUNNER STEEL PRODUCTS INC., A CORPORATION '1 DUAL TIBET) TRUCK Wi-:TEEL

This invention relatestodu al-tired automobile wheels and concerns itself especially with means for securing the tire rims to the wheels. An approved type of mounting consists in providing annular ribs on the inner faces of the tire rims which come upon seats on the rim of the wheel, and it has been the custom to pass the inboard tire rim over the wheel from the outboard side, after which the rim is secured in place by'a wedge ring. In addition to this it is necessary to lprovide a seat for the inboard side of the outer tire rim and to secure the same in place.' 'n l V In the usual construction, there is no provision for circulation of air between-the tires, and consequently they tend to become dangerously heated.

The general object of this invention is to provide a simple construction for a wheel of this type and in which the removable seats for the tire rims may be simply constructed and readily secured in place; it is also an object of the invention to provide a construction of rim for the wheel which is particularly adapted to cooperate with the securing means for the rings which carry the rim seats and to provide means for cooling the tires.

Further objects of the invention will appear hereinafter. f

The invention consists in the novel parts and combination of parts to be described hereinafter, all of which contribute to produce an eiiicient dual-tired truck wheel.v

A preferred embodiment of the invention is described in the following specification, while the broad scope ofthe invention is pointed out in the appended claims.

c In the drawings:

Figure 1 is a section through a dual-tired automobile wheelV embodying myv` improvement, the tire rims being indicated in dotted outline. o

Figure 2 is a vertical section taken on the line 2-2 of Fig. 1 and extendingall around the wheel; this view is upon a reduced scale.

' Figure 3 is a vertical section taken on the Y line 3-3 of Fig. l and showing a shortporvtion of the rim of the wheel.

with a concavo-conveX or arch-shaped rim 1 which is connected integrally towebs 2, which constitutel the disc lor body'of the wheel.

ylfhis wheel isadapted to be formed of castv iron, but preferably of cast steel. It includes 'an'inboard felloey 3 which' connectsjintegrally with the' inboard edge ofthe arch 1, and itv alsoincludes an outboard felloev 4 which is vpreferably of boxfformin crossV Y section,"v i c A n l v f In addition'to'this thewheel is preferably provided with a plurality of webs disposed in a substantially radial plane and extending across the bottom ,fof the arch and terminating in the vicinity vof thefelloes. j In order to carry the inboard tire 6, indicated in, dotted outline, I providean .inclined tire-rim seat 7 adjacent `the inboard edge of the inboard fello-e 3. kThe tire-rim, also is provided with an annular rib 8 dn its under side to come upon-this seat, anda similar but deeper rib 9 is provided on thev under side of the tire rim, Vwhich is supported adj acent the outboard edge of the inboard tire.

YIn order to provide a seat for the rib 9 I provide a ring l0 in the form of an annular member with suitable means for securing the same tothe inboard felloeadjacent vits juncc tion with the arch 1. In' order to accomplish this I prefer to providefa circumferentialseatface ,11 which may be of conical shape, and the ring 10'is provided with a conical face" on its inner side to seat upon this 'face 11. On itsouter side the ring 10 is provided with a seat 12 in the form of an inclined face'whivch engages the inclined inner face of the rib 9. In thisway, the ring 1() cooperates with the seat 17 tocarry the inboard tire. l

i In order to enablethe outboard felloe to 'carry the outboard tireriml, I provide a second ring 14 and thisfringois in the form of 'an annular member constructed so as to rest unattached upon v af cylindricaly circumferential face 15 which is formed on the outer felloe, preferablyadjacent itsjunctionwith 4 the arch 1. c This ring need not be secured to thef wheel but simply rests on lthis face.

However, in order to holdiit in vvplaceandab- VSorb lateral thrust forces acting upon it, I

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wardly so as to clear the lower edges of the usualy downwardly offset flange 17 which is formed on the outboard edge of the tire rim. 10' In order to stien these bars 16, I prefer to form them of Tcross ,section so that each bar presents a vertical web 18 with a flange projecting from it at each side (seeFig. 2). i

The outer side of the ring 14 is formed with an inclined seat face 19 which operates as a seatfor the corresponding rib on the inner vface ofthe outboard tire rim.

Y At the outboard edge of the outboard rim, I provide a third ring 2O which is a clamping ring attached to the outboard side of the wheel in anysuitable manner and which pre- Vsents. 4an inclined seat face 21 to cooperate with the face 19 to carry the 'outboard tire rim 13.1 This ring 20 may be of the well :known Wedge form; in other words, for this ring I may use an ordinary wedge ring. This' wedge, ring 2()V is secured inplace by lugs or Vclips 22 secured to the outboard felloe by suitable stud bolts 23.

In order to facilitate placing the rings 1Y0 a 'plurality ,of corresponding sections 24 which are connected at their ends and middle points bythe cross bars 16.` Each section of the ring 10 may be provided with lugs 25 located between the bars in order to cooperate withstud bolts 26 secured in the outer felloe at its junction with the arch 1.

yWhen truck wheels such as' this v are emsometimes become highly heated due largely to the internal Jfriction in theV rubber. Iprefer to construct the wheel in such a way as to Jfacilitate circulation of "air into ythe space between the tires. SuchV a circulation is facilitated by the use ofthe arch 1 and also by providing openings 27'through the arch on its outboard side between the disc web 2 and the outboard felloe 4. These openings 27 ,giver webs 5 which'operate as propeller blades to Y force the air outwardly between the tires and yinto vcontactwithV the adjacent projecting Y edgesofthetire rims'. It will be evident that by employing bars 16 for connecting the 'rings 10 and'14, this space ywill be left open so 'that' there is substantially no obstruction 'tothe outward circulation of the air.` Y Y In lplacing the tires on the wheel, the inboard ,tire rim 6 is of course slid into place and the sections of the Iring 10 are then adjusted Vinto positionand the nuts of the bolts *Y y 55 26.tightened up. Y. When the ring 10is put in kare reacted to by the clamping ring 20, which bolts thaty clamp both tire-rims andthe and 14 in place, I prefer to divide theminto f ployed in carrying heavy loads, the tires tire-rim,and an outboard split ring. in the place, the sections of the ring 14 will come into place on the circumferential face 15 and provide a seat for the outboard rim 13, which is then slid Lover the outboard felloe; the wedge ring 2O is then put in place and secured.

Special attention isV called tothe fact that I provide a set of studs mounted in the inboard felloe for securing the inboard split ring of the spacer. The effect of this is that the lateral` or'side thrust of the tire-rim which is developed in turning curves are reacted to lby the seat face 7, which is formed directly on the inboard felloe and by the inboard split ring 10. And Iy provide a separate set of outboard studs that correspond toy the clamping ring 20 andwhich are` mounted in the outboard felloe. In this way the lateral or' side thrusts ofthe outboardr rim issolidly secured to the outboard felloe by'A itsvstuds, and lthe lateral or side thrustsl of the 'outboard rim in the other direction are reacted vto by the ring 14 impartingv the thrusts through the cross bars 16 Vto the ringy 90 10 Whichpresses against the inboard felloe. I consider this'vconstruction far superior to tire-rim mounti'ngs in which a spacer ring is employed between the tire-rims held by long spacer upgagainst an inboard seat,for several i* reasons, one of which is that the long bolts Lhave a O'reater amount of extension underthe great road strains which are developed vin driving. trucks around curves,.thereby tendnection should always be clamped upabsolutely tight; if there is any movement possible, breakage is almost certain to occur. According to rmy invention three of the lateral.A road thrusts are takenv solidly on the adjacent portion of the felloe, and the fourth which is developedat the ring 14 is taken through the strut bars 16 solidly against the inboard felloe. .y Y i It is understood that the embodiment of the invention described'l herein is only one of the many embodimentsjthis invention may take, and Ido not wish to be limited inthe practice lof the invention, norin the claims, ,llo to the particular embodiment vrset forth.

VJhatIclaimis:V l' f 1. A dual-tired tru-cli wheel having an integral inboard tire-rim seat, an `.inboard split ring in the form of an annular member with wheel for securing the same to the wheel, said inboard ring havingaseat to cooperate with the first named seat in carrying the inboard 1.25 form of an annularmember with a Vplurality of cross-bars integralwiththe said rings and rigidly ccnnectingthe same, saidoutboa'rd' ring constructedto rest upon the wheel atits outboard' sideand having' a seat-to kcooperate V413u 1,00` ing to loosen Vup the connection. Such con-' ilo .meansflocated at the inboard side of the in carrying the outboard. tire-rim, said crossbars being out of Contact with the wheel, the openings formed between said cross-bars operating to permit free circulation of the air in the space between the tires, said inboard split ring operating to secure the inboard tire'rim independently of the outboard rim.

2. dual-tired truck wheel having an integral inboard tire-rim seat, an inboard ring in the form of an annular member composed of a plurality of sections, said annular meinber having means located at the inboard side of the wheel for securing the same to the wheel, said inboard ring having a tapered seat on its radially inner face and a tapered seat on its radially outer side to cooperate with the first named seat in carrying the inboard tire-rim, and an outboard ring in the form of an annular member composed of a plurality of sections to correspond with the iirst named sections with bars connecting the saine integrally with the first named sections, said wheel having a cylindrical circumferential face, the annular member of the out` board ring constructed to rest unattached upon said cylindrical face, and having a ta-V pered seat on its radially outer side to cooperate in carrying the outboard tire-rim.

3. A dual-tired truck wheel having an outboard felloe and an inboard felloe with a concave-convex wheel rim connecting the saine, with the concave side of the run located radially outward, a ring in the form of an annular member, studs attached to the 7 inboard felloe adjacent its junction with the said rim, said annular member having fastoning lugs received on the said studs, said inboard felloe having a tire-rim seat cooperating with said ring to carr the inboard tire-rim, a second ring in the orm of an annular member distinct from the iirst named annular member resting unattached on the outboard felloe adjacent its junction with the said wheel rim, said rings having integral bars connecting the same, saidV bars lying out of Contact with the said concavo-convexV wheel rim and bridging the same, said concave-convex rim having openings in its wall giving access to said studs from the outboard side and permitting free circulation of air in the rim through the spaces between the said bars, said second ring having a seat for the outboard tire-rim.

4. A dual tired truck wheel having a wheel body with an integral outboard felloe and an integral inboard elloe, the inboard felloe having a tire-rim seat adjacent its inboard edge, an annular split spacer ring having an inboard ring, studs mounted in the inboard 'telles with nuts located at the inboard felloe for rigidly attaching the inboard ring to the inboard felloe so that the inboard ring cooperates with the inboard rim-seat to carry the inboard tire rim, said spacer ring having an outboard ring resting on the outboard felloe and having bars integral with the inboard and outboard rings and rigidly connecting the same, said outboardl ring having a seat for the outboard tire-rim, and a clamping ring seated on the integral outboard felloe, with studs mounted in the outboard felloe for clamping up the same against the outboard tire-rim seat and cooperating with the outboard ring of the Spacer to carry the outboard tire-rim.

5. A dual tired truck wheel having a wheel body with an integral outboard felloe, and an integral inboard felloe, the inboard felloe having a tire-rimV seat adjacent its inboard edge, a spacer having on inboard split ring, studs mounted in the inboard felloe with nuts adjacent the inboard felloe for attaching the inboard split ring to the inboard elloe, said spilt ring cooperating with the integral inboard rim-seat to carry the in. board tire-rim, said 'spacer having an out-` board split-ring resting on the outboard felloe and having a seat on its outer side for the outboard tire rim, and an outboard clamping ring seated on the outboard elloe, studs mounted in the-outboard elloe, with nuts on the studs for clamping the clamping ring so that the clamping ring cooperates with the outboard ring ofthe spacer to4 carry the outboard tire-rim, whereby side thrusts of the inboardrim are reacted to by the inboard felloe and the bolted inboard split ring, and the side thrusts of the outboard tire-rim are reacted to by the outboard tirerim and the spacer.

6. A dual-tired truck wheel having an integral inboard tire-rim seat, an inboard split ring in the form of an annular member, means carried on the split ring for securing the same to the wheel, bolts located at the inboard side of the wheel cooperating with said means to secure the inboard split ring to thewheel, said split ring having a seat to cooperate with the first-named seat in carrying the inboard tire-rim, and an outboard split ring in the form of an annular member, with a plurality of cross-bars integral with lthe said` rings and rigidly connecting the same, said outboard ring constructed to rest upon the wheel at its outboard side and having a seat to cooperate in carrying the outboard tire-rim, said cross-bars being out of con- Signed at Los Angeles, California, this tact with the wheel, the openings formed be- 

